Improved lath foe plastering



@uiten Ataire @anni @fitta ELLICOTT D. AVERELL, OF NEW YORKN. Y.

Letters Pal-tent No. 65,153, dated May 28, 1867.

IMPROVED LATE FOB. PLASTERING.

dlp tlgehnlt tuant tu in tigen Wetters gnirnt mit mating pat nt tige sulla.

T0 ALL WHOM IT MAY CONOERN:

Beit known that I, ELLIOOTT D. AVERELL, of the city, county, and State of New York, have invented a new and useful Improvement in Lath for Plastering; and I do hereby declare that the following is a full, clear, and exact description' of the same, reference being had to the accompanying drawings, making a portion of this specification, in Whichi Figure 1 is a side view of apiece of lathconstructed accord-ing to my invention.

Figure 2 is a longitudinal'transverse section of the same.V

Figure 3 is a transverse section taken at right angles to g'. 2.

Similar letters of reference indicate corresponding parts in all the figures.

This invention consists in the construction of a lath for plaster ceilings or walls, with countersunk holes or apertures, formed by punching or'other suitable means, in such manner as to secure the permanent retention of the plaster upon the lath in a much more effectual manner than has been the case with the-lath ordinarilyin use.

To enable others to understand the nature and construction of my invention, 1 will proceed to describe it with reference to the drawings.

The lath is made in strips, A, of any suitable woodfand ofl any desired or proper length, breadth, and thickness. Thesest-raps or laths are perforated with a number of holes o'r apertures, A, which. are situated at any required distance from each other throughout the entire length and breadth of the strip of lath, and which extend entirely through the same from one `of the fiat sidesfthoreof to the other; theends of these holes or apertures Al at one side of the lath being considerably larger than the ends at the other side of the said lath,

so that the apertures are made of 'countersunk form, or, in other words, are formed with 'bevclled sides D, as shown more fully'in tig. 1, which, represents that side of the lath which is placed innermost when used. The apertures A are made preferably of an oblong form, as shown in the aforesaid fig. 1, but may be of square, circular, or any other suitable shape, as may be desired. It is designed that these holes or apertures A shall be formed by means of a `punch corresponding in size and shape with the outer or small ends of the'apertures to be formed in the lath, and operated by any suitable mechanism, the said punch being used in connection with a suitable table forsupporting the lath, furnished with a slot or recess of a larger size than the punch, and arranged below the same and in such manner that the punch being forced through the lath, forces out a portion thereof, and thus forms one of the apertures A therein, the part punched out being forced through the slot or recess in the supporting vtable aforesaid, the said recess, by its increased size as compared with the punch, enabling the latter to punch out a greater area from the inner side ofthe lath thanffrom'the outer side thereof, thus giving to the aperture thus formed the countersunk form hereinbefore` described, at the same time that the portion of wood removed from the lath, being torn out from the inner side of the lat-h in irregular lines, the bevelled sides ofthe aperture A are made of rough and irregular contour, which increases the efficiency of the oountersunk 'apertures A in holding the plaster upon the'lath; this method of perforating the lath also enabling it to be manufactured at a very moderate cost. The aperture A may, however, be formed in the lath by any other suitable means, if desired. l

The lath as thus constructed is secured upon the wall or ceiling in any ordinaryor suitable manner, with .that side outward at which the small or narrow endsiof the apertures 'A are situated. The plaster is then spread upon such outer surface ofthe lath, a portion thereof passing into and through the aforesaid countersunk apertures, and, hardening therein, is thus dove-tailed into the said apertures, the plaster being by these means much more securely and permanently secured upon the laththan would be the case if the sides of the aperture A were not made of bev'elled form as hcreinbefore fully described, or, in other words, if the aperture A were not countersunk in substantially the manner herein set forth.

What I claim as new, and desire to secure by Letters Patent, is-

`A lath constructed with countersunk apertures Af, substantially as hereinset forth for the purpose specified.

' ELLICOTT D. AVERELL.'

Witnesses:

G. W. REED. 

